dft_tools/doc/reference/python/operators/operators.rst

.. module:: pytriqs.random 

.. _operators:

The Operator class
===================

The TRIQS solvers need to know several operators in order to solve the impurity
problem. For example, they must know what the local Hamiltonian is, but also its
quantum numbers (that can be used to improve the speed), possibly some
operators to be averaged, aso.

In order to deal with these objects, TRIQS provides a class that allows to
manipulate operators.

A simple example
-----------------

.. runblock:: python

    from pytriqs.operators import *
    H = C('up',1) * Cdag('up',2) + C('up',2) * Cdag('up',1)
    print H
    print H - H.dagger()
    print anti_commutator(C('up'),Cdag('up'))
    print anti_commutator(C('up'),0.5*Cdag('down'))


Complete reference
------------------------

.. autoclass:: pytriqs.operators.Operator
  :members:
Cythonize random generators A trivial cythonized version of the c++ random_generator class. Useful to get the names of the generators from the python. new file: pytriqs/random/* new file: doc/reference/python/random/* 2013-09-13 17:49:28 +02:00			`.. module:: pytriqs.random`
Add documentation about operators and IPT new file: doc/reference/python/operators/ new file: doc/tutorials/python/ipt/ 2013-08-21 10:12:15 +02:00
Cythonize random generators A trivial cythonized version of the c++ random_generator class. Useful to get the names of the generators from the python. new file: pytriqs/random/* new file: doc/reference/python/random/* 2013-09-13 17:49:28 +02:00			`.. _operators:`
Add documentation about operators and IPT new file: doc/reference/python/operators/ new file: doc/tutorials/python/ipt/ 2013-08-21 10:12:15 +02:00
			`The Operator class`
			`===================`

			`The TRIQS solvers need to know several operators in order to solve the impurity`
			`problem. For example, they must know what the local Hamiltonian is, but also its`
			`quantum numbers (that can be used to improve the speed), possibly some`
			`operators to be averaged, aso.`

			`In order to deal with these objects, TRIQS provides a class that allows to`
			`manipulate operators.`

			`A simple example`
			`-----------------`

Work on documentation Mainly on the python part. I had a quick browse through to check if the scripts were still working. 2013-09-17 14:55:55 +02:00			`.. runblock:: python`

			`from pytriqs.operators import *`
			`H = C('up',1) * Cdag('up',2) + C('up',2) * Cdag('up',1)`
			`print H`
			`print H - H.dagger()`
			`print anti_commutator(C('up'),Cdag('up'))`
			`print anti_commutator(C('up'),0.5*Cdag('down'))`
Add documentation about operators and IPT new file: doc/reference/python/operators/ new file: doc/tutorials/python/ipt/ 2013-08-21 10:12:15 +02:00

			`Complete reference`
			`------------------------`

			`.. autoclass:: pytriqs.operators.Operator`
			`:members:`